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The Understanding Of Genetics (biology Only) (GCSE Biology)

The following is a GCSE Biology test covering 'The Understanding Of Genetics (biology Only)' from the broader topic Inheritance, Variation And Evolution. The test is geared towards the AQA exam board style syllabus.
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Which statement best describes homologous structures found in the limbs of different vertebrates?
Two animals from the same species show different fur colour because of differences in their genes. This is an example of what type of variation?
Why are antibiotic resistance genes in bacteria an example of natural selection?
What is the name for a change in the DNA sequence that can create a new allele?
Which technique do scientists use to compare DNA sequences from different species to estimate how closely related they are?
Cystic fibrosis is caused by a recessive allele. If both parents are carriers (Ff), what is the probability a child will have cystic fibrosis?
Which observation would most strongly support the idea that two populations have become separate species?
What evidence from fossils most directly supports the theory of evolution by natural selection?
Which term describes the physical appearance produced by an organism’s genes and environment?
Which process produces gametes with half the chromosome number and creates genetic variation by independent assortment and crossing over?
What is meant by a “carrier” for a genetic disease?